Although the U3 kernel still has the stack overflow warning messages,
we did a lot to reduce stack usage. its certainly worth verifying
whether or not the latest errata kernel still exhibits this behavior.
The kernel is e.34.

Any specifics on what was done? As you might know it is hard to
reproduce this environment, and if I suggest to a customer to update,
they will want to know what was done to impact the stack situation?
thanks,
Sheryl